package com.itheima.service.impl;

import com.itheima.service.UserService;

public class UserServiceImpl implements UserService {
    public void save(int n, int m) {
        System.out.println("user service running..."+n+","+m);
        int i = 1/0;
    }

    public int update() {
        System.out.println("user service update running...");
        return 100;
    }

    public void delete() {
        System.out.println("user service delete running...");
        int i = 1/0;
    }
}
